Atomic physics effects on dissipative toroidal drift wave stability

Michael Beer, T. S. Hahm

Research output: Contribution to journalArticle

Abstract

The effects of atomic physics processes such as ionization, charge exchange, and radiation on the linear stability of dissipative drift waves are investigated in toroidal geometry, both numerically and analytically. For typical Tokamak Fusion Test Reactor (TFTR) [Plasma Physics and Controlled Nuclear Fusion Research, 1986 (IAEA, Vienna, 1987), Vol. 1, p. 51] and Texas Experimental Tokamak (TEXT) [Nucl. Technol. Fusion 1, 479 (1981)] edge parameters, overall linear stability is determined by the competition between the destabilizing influence of ionization and the stabilizing effect due to the electron temperature gradient. An analytical expression for the linear marginal stability condition, ηe crit, is derived. The instability is most likely to occur at the extreme edge of tokamaks with a significant ionization source and a steep electron density gradient.

Original languageEnglish (US)
Pages (from-to)2567-2576
Number of pages10
JournalPhysics of Fluids B
Volume4
Issue number8
StatePublished - 1992
Externally publishedYes

Fingerprint

Atomic physics
atomic physics
Fusion reactions
ionization
Ionization
fusion
reactor physics
Electron temperature
plasma physics
Ion sources
nuclear fusion
charge exchange
Thermal gradients
Carrier concentration
temperature gradients
Ion exchange
Physics
electron energy
Plasmas
Radiation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Mechanics of Materials
  • Computational Mechanics
  • Fluid Flow and Transfer Processes

Cite this

Atomic physics effects on dissipative toroidal drift wave stability. / Beer, Michael; Hahm, T. S.

In: Physics of Fluids B, Vol. 4, No. 8, 1992, p. 2567-2576.

Research output: Contribution to journalArticle

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